From studies of chemistry, we know that in a straight chain hydrocarbon, such as

Question

From studies of chemistry, we know that in a straight chain hydrocarbon, such as a fatty acid, each methylene group lengthens the chain by about 0.13 nm. From studies of protein structure, we know that one turn of an -helix takes 3.6 amino acid residues and lengthens the axis of the helix by about 0.56 nm. Using this information, answer the following questions: (Answer parts a-c to one decimal place in units of nm, e.g. 9.0 nm.)

b. How many fatty acid methylene groups would be needed to span this distance? (Round to closest whole number.)

Explanation / Answer

62 fatty acid methylene groups required

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